gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991, 1992, 1993, 1994, 1995
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef DEFS_H
  22 #define DEFS_H
  23
  24 #include <stdio.h>
  25
  26 /* First include ansidecl.h so we can use the various macro definitions
  27    here and in all subsequent file inclusions.  */
  28
  29 #include "ansidecl.h"
  30
  31 #ifdef ANSI_PROTOTYPES
  32 #include <stdarg.h>
  33 #else
  34 #include <varargs.h>
  35 #endif
  36
  37 #include "libiberty.h"
  38
  39 /* libiberty.h can't declare this one, but evidently we can.  */
  40 extern char *strsignal PARAMS ((int));
  41
  42 #include "progress.h"
  43
  44 #include "mmalloc.h"
  45
  46 /* For BFD64 and bfd_vma.  */
  47 #include "bfd.h"
  48
  49 /* An address in the program being debugged.  Host byte order.  Rather
  50    than duplicate all the logic in BFD which figures out what type
  51    this is (long, long long, etc.) and whether it needs to be 64
  52    bits (the host/target interactions are subtle), we just use
  53    bfd_vma.  */
  54
  55 typedef bfd_vma CORE_ADDR;
  56
  57 #define min(a, b) ((a) < (b) ? (a) : (b))
  58 #define max(a, b) ((a) > (b) ? (a) : (b))
  59
  60 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  61    avoiding function calls if the first characters are not the same. */
  62
  63 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  64 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  65 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  66
  67 /* The character GNU C++ uses to build identifiers that must be unique from
  68    the program's identifiers (such as $this and $$vptr).  */
  69 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  70
  71 #include <errno.h>              /* System call error return status */
  72
  73 extern int quit_flag;
  74 extern int immediate_quit;
  75 extern int sevenbit_strings;
  76
  77 extern void quit PARAMS ((void));
  78
  79 #define QUIT { \
  80   if (quit_flag) quit (); \
  81   if (interactive_hook) interactive_hook (); \
  82   PROGRESS (1); \
  83 }
  84
  85 /* Command classes are top-level categories into which commands are broken
  86    down for "help" purposes.
  87    Notes on classes: class_alias is for alias commands which are not
  88    abbreviations of the original command.  class-pseudo is for commands
  89    which are not really commands nor help topics ("stop").  */
  90
  91 enum command_class
  92 {
  93   /* Special args to help_list */
  94   all_classes = -2, all_commands = -1,
  95   /* Classes of commands */
  96   no_class = -1, class_run = 0, class_vars, class_stack,
  97   class_files, class_support, class_info, class_breakpoint,
  98   class_alias, class_obscure, class_user, class_maintenance,
  99   class_pseudo
 100 };
 101
 102 /* Languages represented in the symbol table and elsewhere.
 103    This should probably be in language.h, but since enum's can't
 104    be forward declared to satisfy opaque references before their
 105    actual definition, needs to be here. */
 106
 107 enum language
 108 {
 109    language_unknown,            /* Language not known */
 110    language_auto,               /* Placeholder for automatic setting */
 111    language_c,                  /* C */
 112    language_cplus,              /* C++ */
 113    language_chill,              /* Chill */
 114    language_fortran,            /* Fortran */
 115    language_m2,                 /* Modula-2 */
 116    language_asm                 /* Assembly language */
 117 };
 118
 119 /* the cleanup list records things that have to be undone
 120    if an error happens (descriptors to be closed, memory to be freed, etc.)
 121    Each link in the chain records a function to call and an
 122    argument to give it.
 123
 124    Use make_cleanup to add an element to the cleanup chain.
 125    Use do_cleanups to do all cleanup actions back to a given
 126    point in the chain.  Use discard_cleanups to remove cleanups
 127    from the chain back to a given point, not doing them.  */
 128
 129 struct cleanup
 130 {
 131   struct cleanup *next;
 132   void (*function) PARAMS ((PTR));
 133   PTR arg;
 134 };
 135
 136
 137 /* The ability to declare that a function never returns is useful, but
 138    not really required to compile GDB successfully, so the NORETURN and
 139    ATTR_NORETURN macros normally expand into nothing.  */
 140
 141 /* If compiling with older versions of GCC, a function may be declared
 142    "volatile" to indicate that it does not return.  */
 143
 144 #ifndef NORETURN
 145 # if defined(__GNUC__) \
 146      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 147 #  define NORETURN volatile
 148 # else
 149 #  define NORETURN /* nothing */
 150 # endif
 151 #endif
 152
 153 /* GCC 2.5 and later versions define a function attribute "noreturn",
 154    which is the preferred way to declare that a function never returns.
 155    However GCC 2.7 appears to be the first version in which this fully
 156    works everywhere we use it. */
 157
 158 #ifndef ATTR_NORETURN
 159 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 160 #  define ATTR_NORETURN __attribute__ ((noreturn))
 161 # else
 162 #  define ATTR_NORETURN /* nothing */
 163 # endif
 164 #endif
 165
 166 #ifndef ATTR_FORMAT
 167 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 168 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 169 # else
 170 #  define ATTR_FORMAT(type, x, y) /* nothing */
 171 # endif
 172 #endif
 173
 174 /* Needed for various prototypes */
 175
 176 #ifdef __STDC__
 177 struct symtab;
 178 struct breakpoint;
 179 #endif
 180
 181 /* From blockframe.c */
 182
 183 extern int inside_entry_func PARAMS ((CORE_ADDR));
 184
 185 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 186
 187 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 188
 189 /* From ch-lang.c, for the moment. (FIXME) */
 190
 191 extern char *chill_demangle PARAMS ((const char *));
 192
 193 /* From utils.c */
 194
 195 extern int strcmp_iw PARAMS ((const char *, const char *));
 196
 197 extern char *safe_strerror PARAMS ((int));
 198
 199 extern char *safe_strsignal PARAMS ((int));
 200
 201 extern void init_malloc PARAMS ((void *));
 202
 203 extern void request_quit PARAMS ((int));
 204
 205 extern void do_cleanups PARAMS ((struct cleanup *));
 206
 207 extern void discard_cleanups PARAMS ((struct cleanup *));
 208
 209 /* The bare make_cleanup function is one of those rare beasts that
 210    takes almost any type of function as the first arg and anything that
 211    will fit in a "void *" as the second arg.
 212
 213    Should be, once all calls and called-functions are cleaned up:
 214 extern struct cleanup *
 215 make_cleanup PARAMS ((void (*function) (void *), void *));
 216
 217    Until then, lint and/or various type-checking compiler options will
 218    complain about make_cleanup calls.  It'd be wrong to just cast things,
 219    since the type actually passed when the function is called would be
 220    wrong.  */
 221
 222 extern struct cleanup *make_cleanup ();
 223
 224 extern struct cleanup *save_cleanups PARAMS ((void));
 225
 226 extern void restore_cleanups PARAMS ((struct cleanup *));
 227
 228 extern void free_current_contents PARAMS ((char **));
 229
 230 extern void null_cleanup PARAMS ((char **));
 231
 232 extern int myread PARAMS ((int, char *, int));
 233
 234 extern int query PARAMS((char *, ...))
 235      ATTR_FORMAT(printf, 1, 2);
 236 \f
 237 /* Annotation stuff.  */
 238
 239 extern int annotation_level; /* in stack.c */
 240 \f
 241 extern void begin_line PARAMS ((void));
 242
 243 extern void wrap_here PARAMS ((char *));
 244
 245 extern void reinitialize_more_filter PARAMS ((void));
 246
 247 typedef FILE GDB_FILE;
 248 #define gdb_stdout stdout
 249 #define gdb_stderr stderr
 250
 251 extern void gdb_flush PARAMS ((GDB_FILE *));
 252
 253 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 254
 255 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 256
 257 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 258
 259 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 260
 261 extern int putchar_unfiltered PARAMS ((int c));
 262
 263 extern void puts_filtered PARAMS ((char *));
 264
 265 extern void puts_unfiltered PARAMS ((char *));
 266
 267 extern void vprintf_filtered PARAMS ((char *, va_list))
 268      ATTR_FORMAT(printf, 1, 0);
 269
 270 extern void vfprintf_filtered PARAMS ((FILE *, char *, va_list))
 271      ATTR_FORMAT(printf, 2, 0);
 272
 273 extern void fprintf_filtered PARAMS ((FILE *, char *, ...))
 274      ATTR_FORMAT(printf, 2, 3);
 275
 276 extern void fprintfi_filtered PARAMS ((int, FILE *, char *, ...))
 277      ATTR_FORMAT(printf, 3, 4);
 278
 279 extern void printf_filtered PARAMS ((char *, ...))
 280      ATTR_FORMAT(printf, 1, 2);
 281
 282 extern void printfi_filtered PARAMS ((int, char *, ...))
 283      ATTR_FORMAT(printf, 2, 3);
 284
 285 extern void vprintf_unfiltered PARAMS ((char *, va_list))
 286      ATTR_FORMAT(printf, 1, 0);
 287
 288 extern void vfprintf_unfiltered PARAMS ((FILE *, char *, va_list))
 289      ATTR_FORMAT(printf, 2, 0);
 290
 291 extern void fprintf_unfiltered PARAMS ((FILE *, char *, ...))
 292      ATTR_FORMAT(printf, 2, 3);
 293
 294 extern void printf_unfiltered PARAMS ((char *, ...))
 295      ATTR_FORMAT(printf, 1, 2);
 296
 297 extern void print_spaces PARAMS ((int, GDB_FILE *));
 298
 299 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 300
 301 extern char *n_spaces PARAMS ((int));
 302
 303 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 304
 305 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 306
 307 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 308                                              enum language, int));
 309
 310 extern void perror_with_name PARAMS ((char *));
 311
 312 extern void print_sys_errmsg PARAMS ((char *, int));
 313
 314 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 315    "const char *" in unistd.h, so we can't declare the argument
 316    as "char *".  */
 317
 318 extern char *re_comp PARAMS ((const char *));
 319
 320 /* From symfile.c */
 321
 322 extern void symbol_file_command PARAMS ((char *, int));
 323
 324 /* From top.c */
 325
 326 extern char *skip_quoted PARAMS ((char *));
 327
 328 extern char *gdb_readline PARAMS ((char *));
 329
 330 extern char *command_line_input PARAMS ((char *, int, char *));
 331
 332 extern void print_prompt PARAMS ((void));
 333
 334 extern int input_from_terminal_p PARAMS ((void));
 335
 336 extern int info_verbose;
 337
 338 /* From printcmd.c */
 339
 340 extern void set_next_address PARAMS ((CORE_ADDR));
 341
 342 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 343                                             char *));
 344
 345 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 346
 347 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 348
 349 /* From source.c */
 350
 351 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 352
 353 extern void mod_path PARAMS ((char *, char **));
 354
 355 extern void directory_command PARAMS ((char *, int));
 356
 357 extern void init_source_path PARAMS ((void));
 358
 359 extern char *symtab_to_filename PARAMS ((struct symtab *));
 360
 361 /* From findvar.c */
 362
 363 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 364
 365 /* From readline (but not in any readline .h files).  */
 366
 367 extern char *tilde_expand PARAMS ((char *));
 368
 369 /* Control types for commands */
 370
 371 enum misc_command_type
 372 {
 373   ok_command,
 374   end_command,
 375   else_command,
 376   nop_command
 377 };
 378
 379 enum command_control_type
 380 {
 381   simple_control,
 382   break_control,
 383   continue_control,
 384   while_control,
 385   if_control,
 386   invalid_control
 387 };
 388
 389 /* Structure for saved commands lines
 390    (for breakpoints, defined commands, etc).  */
 391
 392 struct command_line
 393 {
 394   struct command_line *next;
 395   char *line;
 396   enum command_control_type control_type;
 397   int body_count;
 398   struct command_line **body_list;
 399 };
 400
 401 extern struct command_line *read_command_lines PARAMS ((void));
 402
 403 extern void free_command_lines PARAMS ((struct command_line **));
 404
 405 /* String containing the current directory (what getwd would return).  */
 406
 407 extern char *current_directory;
 408
 409 /* Default radixes for input and output.  Only some values supported.  */
 410 extern unsigned input_radix;
 411 extern unsigned output_radix;
 412
 413 /* Possibilities for prettyprint parameters to routines which print
 414    things.  Like enum language, this should be in value.h, but needs
 415    to be here for the same reason.  FIXME:  If we can eliminate this
 416    as an arg to LA_VAL_PRINT, then we can probably move it back to
 417    value.h. */
 418
 419 enum val_prettyprint
 420 {
 421   Val_no_prettyprint = 0,
 422   Val_prettyprint,
 423   /* Use the default setting which the user has specified.  */
 424   Val_pretty_default
 425 };
 426
 427 \f
 428 /* Host machine definition.  This will be a symlink to one of the
 429    xm-*.h files, built by the `configure' script.  */
 430
 431 #include "xm.h"
 432
 433 /* Native machine support.  This will be a symlink to one of the
 434    nm-*.h files, built by the `configure' script.  */
 435
 436 #include "nm.h"
 437
 438 /* Target machine definition.  This will be a symlink to one of the
 439    tm-*.h files, built by the `configure' script.  */
 440
 441 #include "tm.h"
 442
 443 /* If the xm.h file did not define the mode string used to open the
 444    files, assume that binary files are opened the same way as text
 445    files */
 446 #ifndef FOPEN_RB
 447 #include "fopen-same.h"
 448 #endif
 449
 450 /*
 451  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 452  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 453  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 454  * objects be read-write rather than read-only.
 455  */
 456
 457 #ifndef const
 458 #ifndef __STDC__
 459 # ifdef __GNUC__
 460 #  define const __const__
 461 # else
 462 #  define const /*nothing*/
 463 # endif /* GNUC */
 464 #endif /* STDC */
 465 #endif /* const */
 466
 467 #ifndef volatile
 468 #ifndef __STDC__
 469 # ifdef __GNUC__
 470 #  define volatile __volatile__
 471 # else
 472 #  define volatile /*nothing*/
 473 # endif /* GNUC */
 474 #endif /* STDC */
 475 #endif /* volatile */
 476
 477 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 478
 479 #if !defined (UINT_MAX)
 480 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 481 #endif
 482
 483 #if !defined (INT_MAX)
 484 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 485 #endif
 486
 487 #if !defined (INT_MIN)
 488 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 489 #endif
 490
 491 #if !defined (ULONG_MAX)
 492 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 493 #endif
 494
 495 #if !defined (LONG_MAX)
 496 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 497 #endif
 498
 499 #ifdef BFD64
 500
 501 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 502
 503 #define LONGEST BFD_HOST_64_BIT
 504
 505 #else /* No BFD64 */
 506
 507 /* If all compilers for this host support "long long" and we want to
 508    use it for LONGEST (the performance hit is about 10% on a testsuite
 509    run based on one DECstation test), then the xm.h file can define
 510    CC_HAS_LONG_LONG.
 511
 512    Using GCC 1.39 on BSDI with long long causes about 700 new
 513    testsuite failures.  Using long long for LONGEST on the DECstation
 514    causes 3 new FAILs in the testsuite and many heuristic fencepost
 515    warnings.  These are not investigated, but a first guess would be
 516    that the BSDI problems are GCC bugs in long long support and the
 517    latter are GDB bugs.  */
 518
 519 #ifndef CC_HAS_LONG_LONG
 520 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 521 #    define CC_HAS_LONG_LONG 1
 522 #  endif
 523 #endif
 524
 525 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 526    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 527    variables and we wish to make use of that support.  */
 528
 529 #ifndef LONGEST
 530 #  ifdef CC_HAS_LONG_LONG
 531 #    define LONGEST long long
 532 #  else
 533 #    define LONGEST long
 534 #  endif
 535 #endif
 536
 537 #endif /* No BFD64 */
 538
 539 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 540    arguments to a function, number in a value history, register number, etc.)
 541    where the value must not be larger than can fit in an int.  */
 542
 543 extern int longest_to_int PARAMS ((LONGEST));
 544
 545 /* Assorted functions we can declare, now that const and volatile are
 546    defined.  */
 547
 548 extern char *savestring PARAMS ((const char *, int));
 549
 550 extern char *msavestring PARAMS ((void *, const char *, int));
 551
 552 extern char *strsave PARAMS ((const char *));
 553
 554 extern char *mstrsave PARAMS ((void *, const char *));
 555
 556 extern PTR xmalloc PARAMS ((long));
 557
 558 extern PTR xrealloc PARAMS ((PTR, long));
 559
 560 extern PTR xmmalloc PARAMS ((PTR, long));
 561
 562 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 563
 564 extern int parse_escape PARAMS ((char **));
 565
 566 extern char *reg_names[];
 567
 568 /* Message to be printed before the error message, when an error occurs.  */
 569
 570 extern char *error_pre_print;
 571
 572 /* Message to be printed before the error message, when an error occurs.  */
 573
 574 extern char *quit_pre_print;
 575
 576 /* Message to be printed before the warning message, when a warning occurs.  */
 577
 578 extern char *warning_pre_print;
 579
 580 extern NORETURN void error PARAMS((char *, ...)) ATTR_NORETURN;
 581
 582 extern void error_begin PARAMS ((void));
 583
 584 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 585
 586 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 587
 588 /* Reasons for calling return_to_top_level.  */
 589 enum return_reason {
 590   /* User interrupt.  */
 591   RETURN_QUIT,
 592
 593   /* Any other error.  */
 594   RETURN_ERROR
 595 };
 596
 597 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 598 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 599 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 600 typedef int return_mask;
 601
 602 extern NORETURN void
 603 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 604
 605 extern int
 606 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 607
 608 extern void warning_begin PARAMS ((void));
 609
 610 extern void warning PARAMS ((char *, ...))
 611      ATTR_FORMAT(printf, 1, 2);
 612
 613 /* Global functions from other, non-gdb GNU thingies.
 614    Libiberty thingies are no longer declared here.  We include libiberty.h
 615    above, instead.  */
 616
 617 extern char *getenv PARAMS ((const char *));
 618
 619 /* From other system libraries */
 620
 621 #ifdef __STDC__
 622 #include <stddef.h>
 623 #include <stdlib.h>
 624 #endif
 625
 626 extern int fclose ();
 627
 628 #ifndef atof
 629 extern double atof ();
 630 #endif
 631
 632 #ifndef MALLOC_INCOMPATIBLE
 633
 634 extern PTR malloc ();
 635
 636 extern PTR realloc ();
 637
 638 extern void free ();
 639
 640 #endif /* MALLOC_INCOMPATIBLE */
 641
 642 #ifndef WIN32
 643 extern char *strchr ();
 644
 645 extern char *strrchr ();
 646
 647 extern char *strstr ();
 648
 649 extern char *strtok ();
 650
 651 extern char *strerror ();
 652 #endif
 653
 654 /* Various possibilities for alloca.  */
 655 #ifndef alloca
 656 # ifdef __GNUC__
 657 #  define alloca __builtin_alloca
 658 # else /* Not GNU C */
 659 #  ifdef sparc
 660 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 661 #  endif
 662
 663 /* We need to be careful not to declare this in a way which conflicts with
 664    bison.  Bison never declares it as char *, but under various circumstances
 665    (like __hpux) we need to use void *.  */
 666 #  if defined (__STDC__) || defined (__hpux)
 667    extern void *alloca ();
 668 #  else /* Don't use void *.  */
 669    extern char *alloca ();
 670 #  endif /* Don't use void *.  */
 671 # endif /* Not GNU C */
 672 #endif /* alloca not defined */
 673
 674 /* HOST_BYTE_ORDER must be defined to one of these.  */
 675
 676 #if !defined (BIG_ENDIAN)
 677 #define BIG_ENDIAN 4321
 678 #endif
 679
 680 #if !defined (LITTLE_ENDIAN)
 681 #define LITTLE_ENDIAN 1234
 682 #endif
 683
 684 /* Target-system-dependent parameters for GDB. */
 685
 686 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 687 /* The target endianness is selectable at runtime.  Define
 688    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 689    endian' command to change it.  */
 690 #undef TARGET_BYTE_ORDER
 691 #define TARGET_BYTE_ORDER target_byte_order
 692 extern int target_byte_order;
 693 #endif
 694
 695 extern void set_endian_from_file PARAMS ((bfd *));
 696
 697 /* Number of bits in a char or unsigned char for the target machine.
 698    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 699 #if !defined (TARGET_CHAR_BIT)
 700 #define TARGET_CHAR_BIT 8
 701 #endif
 702
 703 /* Number of bits in a short or unsigned short for the target machine. */
 704 #if !defined (TARGET_SHORT_BIT)
 705 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 706 #endif
 707
 708 /* Number of bits in an int or unsigned int for the target machine. */
 709 #if !defined (TARGET_INT_BIT)
 710 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 711 #endif
 712
 713 /* Number of bits in a long or unsigned long for the target machine. */
 714 #if !defined (TARGET_LONG_BIT)
 715 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 716 #endif
 717
 718 /* Number of bits in a long long or unsigned long long for the target machine. */
 719 #if !defined (TARGET_LONG_LONG_BIT)
 720 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 721 #endif
 722
 723 /* Number of bits in a float for the target machine. */
 724 #if !defined (TARGET_FLOAT_BIT)
 725 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 726 #endif
 727
 728 /* Number of bits in a double for the target machine. */
 729 #if !defined (TARGET_DOUBLE_BIT)
 730 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 731 #endif
 732
 733 /* Number of bits in a long double for the target machine.  */
 734 #if !defined (TARGET_LONG_DOUBLE_BIT)
 735 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 736 #endif
 737
 738 /* Number of bits in a pointer for the target machine */
 739 #if !defined (TARGET_PTR_BIT)
 740 #define TARGET_PTR_BIT TARGET_INT_BIT
 741 #endif
 742
 743 /* If we picked up a copy of CHAR_BIT from a configuration file
 744    (which may get it by including <limits.h>) then use it to set
 745    the number of bits in a host char.  If not, use the same size
 746    as the target. */
 747
 748 #if defined (CHAR_BIT)
 749 #define HOST_CHAR_BIT CHAR_BIT
 750 #else
 751 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 752 #endif
 753
 754 /* The bit byte-order has to do just with numbering of bits in
 755    debugging symbols and such.  Conceptually, it's quite separate
 756    from byte/word byte order.  */
 757
 758 #if !defined (BITS_BIG_ENDIAN)
 759 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 760
 761 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 762 #define BITS_BIG_ENDIAN 1
 763 #endif /* Big endian.  */
 764
 765 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 766 #define BITS_BIG_ENDIAN 0
 767 #endif /* Little endian.  */
 768
 769 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 770
 771 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 772
 773 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 774 #endif /* BITS_BIG_ENDIAN not defined.  */
 775
 776 /* In findvar.c.  */
 777
 778 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 779
 780 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 781
 782 extern CORE_ADDR extract_address PARAMS ((void *, int));
 783
 784 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 785
 786 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 787
 788 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 789
 790 extern double extract_floating PARAMS ((void *, int));
 791
 792 extern void store_floating PARAMS ((void *, int, double));
 793 \f
 794 /* On some machines there are bits in addresses which are not really
 795    part of the address, but are used by the kernel, the hardware, etc.
 796    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 797    so we get a "real" address such as one would find in a symbol
 798    table.  This is used only for addresses of instructions, and even then
 799    I'm not sure it's used in all contexts.  It exists to deal with there
 800    being a few stray bits in the PC which would mislead us, not as some sort
 801    of generic thing to handle alignment or segmentation (it's possible it
 802    should be in TARGET_READ_PC instead).  */
 803 #if !defined (ADDR_BITS_REMOVE)
 804 #define ADDR_BITS_REMOVE(addr) (addr)
 805 #endif /* No ADDR_BITS_REMOVE.  */
 806
 807 /* From valops.c */
 808
 809 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 810
 811 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 812
 813 /* Some parts of gdb might be considered optional, in the sense that they
 814    are not essential for being able to build a working, usable debugger
 815    for a specific environment.  For example, the maintenance commands
 816    are there for the benefit of gdb maintainers.  As another example,
 817    some environments really don't need gdb's that are able to read N
 818    different object file formats.  In order to make it possible (but
 819    not necessarily recommended) to build "stripped down" versions of
 820    gdb, the following defines control selective compilation of those
 821    parts of gdb which can be safely left out when necessary.  Note that
 822    the default is to include everything. */
 823
 824 #ifndef MAINTENANCE_CMDS
 825 #define MAINTENANCE_CMDS 1
 826 #endif
 827
 828 #ifdef MAINTENANCE_CMDS
 829 extern int watchdog;
 830 #endif
 831
 832 #include "dis-asm.h"            /* Get defs for disassemble_info */
 833
 834 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
 835                                         int len, disassemble_info *info));
 836
 837 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
 838                                           disassemble_info *info));
 839
 840 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
 841                                            disassemble_info *info));
 842
 843 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
 844
 845 /* Hooks for alternate command interfaces.  */
 846
 847 #ifdef __STDC__
 848 struct target_waitstatus;
 849 struct cmd_list_element;
 850 #endif
 851
 852 extern void (*init_ui_hook) PARAMS ((void));
 853 extern void (*command_loop_hook) PARAMS ((void));
 854 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
 855                                               FILE *stream));
 856 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
 857                                                       int line, int stopline,
 858                                                       int noerror));
 859 extern int (*query_hook) PARAMS (());
 860 extern void (*flush_hook) PARAMS ((FILE *stream));
 861 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 862 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 863 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 864 extern void (*target_output_hook) PARAMS ((char *));
 865 extern void (*interactive_hook) PARAMS ((void));
 866 extern void (*registers_changed_hook) PARAMS ((void));
 867
 868 extern int (*target_wait_hook) PARAMS ((int pid,
 869                                         struct target_waitstatus *status));
 870
 871 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
 872                                           char *cmd, int from_tty));
 873
 874 extern NORETURN void (*error_hook) PARAMS (()) ATTR_NORETURN;
 875
 876
 877
 878 /* Inhibit window interface if non-zero. */
 879
 880 extern int use_windows;
 881
 882 /* Symbolic definitions of filename-related things.  */
 883 /* FIXME, this doesn't work very well if host and executable
 884    filesystems conventions are different.  */
 885
 886 #ifndef DIRNAME_SEPARATOR
 887 #define DIRNAME_SEPARATOR ':'
 888 #endif
 889
 890 #ifndef SLASH_P
 891 #if defined(__GO32__)||defined(WIN32)
 892 #define SLASH_P(X) ((X)=='\\')
 893 #else
 894 #define SLASH_P(X) ((X)=='/')
 895 #endif
 896 #endif
 897
 898 #ifndef SLASH_CHAR
 899 #if defined(__GO32__)||defined(WIN32)
 900 #define SLASH_CHAR '\\'
 901 #else
 902 #define SLASH_CHAR '/'
 903 #endif
 904 #endif
 905
 906 #ifndef SLASH_STRING
 907 #if defined(__GO32__)||defined(WIN32)
 908 #define SLASH_STRING "\\"
 909 #else
 910 #define SLASH_STRING "/"
 911 #endif
 912 #endif
 913
 914 #ifndef ROOTED_P
 915 #define ROOTED_P(X) (SLASH_P((X)[0]))
 916 #endif
 917
 918 #endif /* #ifndef DEFS_H */